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1. 

   bnewbold
   Ex-Leaflabs

   Provided directly by the ARM GCC team; no OSX builds though. From launchpad, hopefully they will set up a private package archive (PPA) for debian-based users? This could save many people (including leaflabs+wiring developers) many hours of re-compiling!

   https://launchpad.net/gcc-arm-embedded

   They also link to some "example" linker scripts and initialization code from the CMSIS project; the init code seems to be licensed permissively, and the linker script is unlicensed?

   http://www.onarm.com/cmsis/download/18/cmsis-2-1-patch5-templates-for-gcc-arm-embedded-4-6/

   (via dangerous prototypes)

   Posted 3 years ago #
2. 

   mbolivar
   LeafLabs

   sweet! it'll be nice to have a single place to get them if this works out. summon-arm-toolchain is a pain to use with libmaple because it assumes you want to use libopencm3.

   i actually re-did the libmaple linker scripts and initialization code a while back based on some permissively licensed CodeSourcery stuff. that's all debugged and in master as of libmaple 3a80d12.

   Posted 3 years ago #
3. 

   davideq
   Member

   As posted in a yargento (sp) thread you can build on osx. Using the source files there and this info
   https://github.com/MikeSmith/gcc-arm-embedded-ma
   cosx

   Would be nice if someone built it and made a installer.

   Posted 3 years ago #
4. 

   davideq
   Member

   https://github.com/MikeSmith/gcc-arm-embedded-macosx

   oops

   Posted 3 years ago #
5. 

   ventosus
   Member

   has anybody some working patches for the linker and startup scripts in libmaple for the ARM GNU toolchain at https://launchpad.net/gcc-arm-embedded (or any other more recent toolchain than the old code-sourcery one used by libmaple)

   newer gcc versions have fixed-point math for ARM targets (and the gcc-arm-embedded version has it compiled in by default), which would be a REALLYNICETOHAVE
   http://gcc.gnu.org/ml/gcc-cvs/2011-09/msg00617.html

   those are the linker errors I get
   ...
   (.text+0x0): multiple definition of `_start'
   ...
   (.text+0x5c): undefined reference to `__bss_start__'
   ...
   (.text+0x60): undefined reference to `__bss_end__'
   ...
   (.text.exit+0x16): undefined reference to `_exit'

   Posted 3 years ago #
6. 

   javi9231
   Member

   Hi,
   I have the same problem than ventosus.

   Posted 3 years ago #
7. 

   ventosus
   Member

   I've compiled a working patch for the toolchain at https://launchpad.net/gcc-arm-embedded

   Works fine with my projects and GCC fixed-point math works out of the box ;-)

   Use on your own risk though, as I've no idea about ld-script-fu and pretty much don't know what I'm doing here.

   Apply it on git master branch of libmaple

   http://pastebin.com/h8uvKpUb

   Posted 3 years ago #
8. 

   javi9231
   Member

   Don't worry ventosus, I usually take a lot of risks... I like living on the edge XDDDD
   Thank you so much!!!

   Posted 3 years ago #
9. 

   mbolivar
   LeafLabs

   I looked over your changes; they seem fine (no promises! I've never used the other toolchain). The CodeSourcery drops are a huge PITA, so I'll definitely look into this.

   Posted 3 years ago #
10. 

    mbolivar
    LeafLabs

    It looks like we're going to need to switch to the gcc-arm-embedded toolchain eventually anyway (to get floating point support working properly on F4), so support for it is now in master, based on ventosus's patches. The CodeSourcery toolchain is still supported as well.

    Happy hacking!

    Update: Unfortunately, the OS X link posted earlier is down: https://github.com/MikeSmith/gcc-arm-embedded-macosx is now a 404. It looks like the MikeSmith GitHub account no longer exists. Anyone know of another source of OS X builds? If not, LeafLabs will end up providing them, I suppose.

    Posted 3 years ago #
11. 

    ventosus
    Member

    Since the latest release of the gcc-arm-embedded tool chain (GCC 4.7) there are now toolchains available for all three major operating systems (linux, mac, win32)

    https://launchpad.net/gcc-arm-embedded

    Posted 3 years ago #
12. 

    gbulmer
    Moderator

    ventosus - that is very good news. IIRC 4.7 should have good support for things like fixed point arithmetic, and other fun stuff.

    I can't find any information describing which version of Mac OS X those gcc binaries need. Do you know?

    Posted 3 years ago #
13. 

    feurig
    Member

    I was going to reference the launchpad list talking about which versions were tested against (64bit only !@#$!#$!!!!) but I noticed that the person crashing the test install was you.

    May still have to build from source if thats the case. Downloading form my soul mt. lion machine...

    Posted 3 years ago #
14. 

    ventosus
    Member

    I'm using the Linux version only and it works on 32bit hosts and 64bit hosts (with the right set of 32bit libs installed).

    Yup, fixed point arithmetic was the reason why I switched, works out of the box.

    Posted 3 years ago #

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